The NRA has revised upward the reconstruction expenditure after a new assessment which it will present to the Kathmandu-based donor community on Thursday.
During the international conference on Nepal's reconstruction in June last year after the devastating earthquake, the then government had predicted that Nepal will need around $7 billion for reconstruction.
Delay over reconstruction, surge in numbers of new damaged sectors and the rising US dollar are blamed for the swelling budget.
The top-most priority of the new road map is to construct 800,000 new houses within two years.
Nepal's National Reconstruction Authority is to unveil a revised $8.3 billion plan for post-quake reconstruction of damaged private and public structures and buildings for the next five years.
The post-disaster recovery framework (PDRF) will be a major cornerstone for mobilization of all kinds of foreign and domestic resources for the next five years which will be unveiled by Prime Minister K.P. Oli.